Methane Hydrate Behavior for Water–Oil Systems Containing CTAB and Synperonic PE/F127 Surfactants

Methane hydrates were studied in systems containing aqueous dissolved surfactants in oil emulsions with a volume ratio of 40/60. Two commercial surfactants, named synperonic PE/F127 and cetyltrimethylammonium bromide, were evaluated at 0, 350, 700 and 1500 ppm. Experiments were made by applying the...

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Bibliographic Details
Published in:Energies
Main Authors: Antonio Pavón-García, Abel Zúñiga-Moreno, Ricardo García-Morales, Hugo I. Pérez-López, Octavio Elizalde-Solis
Format: Article in Journal/Newspaper
Language:English
Published: MDPI AG 2022
Subjects:
methane
water-in-oil emulsion
hydrates
formation process
CTAB
synperonic PE/F127
Technology
T
Methane hydrate
Online Access:https://doi.org/10.3390/en15145213
https://doaj.org/article/e8e463d9a87a480ab3a81bb1ddade664
Description
Summary:Methane hydrates were studied in systems containing aqueous dissolved surfactants in oil emulsions with a volume ratio of 40/60. Two commercial surfactants, named synperonic PE/F127 and cetyltrimethylammonium bromide, were evaluated at 0, 350, 700 and 1500 ppm. Experiments were made by applying the cooling–heating path in an isochoric high-pressure cell at different initial pressures of 5.5, 8.0, 10.0 and 12.0 MPa. The obtained parameters were induction time, temperature onset, pressure drop, and dissociation conditions. The results revealed that the dissociation curve for methane in water-in-oil emulsions was not modified by the surfactants. The crystallization (onset) temperature was higher using synperonic PE/F127 in comparison with zero composition, while the opposite occurred with cetyltrimethylammonium bromide. Both surfactants induced a delaying effect on the induction time and a lesser pressure drop.

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